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Underbody braces, turbos and more!

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PostPosted: Wed Jan 21, 2009 1:06 pm 
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I did some research on this last weekend, and found that our engines have a 75mm bore, and the GSXR 1000 has a 73mm bore. That's a mm per side that could be used to unshroud the valves. They look VERY similar to the G-series head. The oil feed hole looks to be in the same location even. However, they are chain drive cams, and would need to be closed up and modified to use a dry belt setup. It also looks like the oil drainback would involve some creativity. Anyone have access to a GSXR 1000 head gasket that they could compare with a GTi head gasket? Bore spacing and bolt pattern are the limiting factors here guys.....

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Imagine these ports feeding a balanced GTi block... Mmmmm... :D
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PostPosted: Wed Jan 21, 2009 1:37 pm 
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There no similarities what so ever, also g10/g13 is 74mm, g15/g16 is 75mm.


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PostPosted: Wed Jan 21, 2009 1:48 pm 
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Allright, so a 73mm bore vs. a 74mm bore. 0.5mm each side. The valves wouldn't hit the cylinder. Whaddya mean, no similarities? Oil feed hole in approximately the same location, four cylinder. If the bores are spaced the same, and the bolt pattern is spaced the same, the head would bolt on. The water jacket is open on a G series, so that wouldn't be a problem. If the head bolts on, the other stuff could be made to work. Timing could be handled with a crank trigger wheel and DIS. The head and valve cover could be closed off at the end with more aluminum, and TIG welding.

Will it physically bolt on, is the info I'm looking for.

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PostPosted: Wed Jan 21, 2009 4:51 pm 
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It won't line up...

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Look at the exhaust side... :?

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The Mini Rattler: '94 Suzuki Swift .993L 6v SOHC 5sp+ "Mk3" Made in Canada *The Winter Beater*
B. Berry: '90 Chevrolet Turbo Sprint 1.0L 6v SOHC 5sp+ "Mk2" Made in Japan

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PostPosted: Wed Jan 21, 2009 4:59 pm 
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Aluminum holes on the block could be welded shut, the one hole on the exhaust side of the bike head could be plugged. Drainback could then be plumbed with AN line.

Cool, thanks for doing the side by side.

However, one thing I did notice is that it looks like the bores are too close together, judging by the gap between chambers.

It would have been a rockin motor though.

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PostPosted: Wed Jan 21, 2009 5:11 pm 
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Those are all active drain back holes in the Swift head, but I do think it's slightly funny that the one in the GSX-R head is placed so as to not line up at all. :lol:

I wouldn't be surprised in the GSX-R engine is slightly shorter either, due to it having to fit better in a bike.

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My cars:

J. McBean: '98 Suzuki Swift 1.3L 16v SOHC 5sp+ "Mk5" Made in Canada
The Mini Rattler: '94 Suzuki Swift .993L 6v SOHC 5sp+ "Mk3" Made in Canada *The Winter Beater*
B. Berry: '90 Chevrolet Turbo Sprint 1.0L 6v SOHC 5sp+ "Mk2" Made in Japan

I got 18MPG in a 3cyl with a 5 speed manual 4dr, '93 Metro! :yeahyeah


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PostPosted: Wed Jan 21, 2009 6:39 pm 
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if there is a will, there is a way, just look what 'they' do on those car custom shows

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PostPosted: Thu Jan 22, 2009 12:39 pm 
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get to your grinder and bore out the intake ports in the GTi head :lol: you'll get big ports :P

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PostPosted: Thu Jan 22, 2009 1:10 pm 
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The GSX-R head has far less distance between cylinders, and a smaller bore, so even if the inner two could be positioned in some way the valves won't hit the cylinder walls the outer two will always have that problem. Definitely won't fit without major mods. Like decreasing the distance between your cylinders to begin with =)

Better off with a complete GSX-R engine I would say..

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- 0,5mm oversized pistons
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- ss exhaust valves
- 222/365 3tech cam
- +10 gear
- K&N air filter
- TBI bridge removed
- 40mm throttle and intake manifold
- srd underdrive pulley
- AASCO 3kg flywheel with GTi clutch
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- deleted cat, now 2" ss pipe
- 14x6J ET45 BSA Racing
- Nankang AS-1 165/55-14
- 35mm lower Apex front and rear springs
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PostPosted: Fri Jan 23, 2009 9:24 pm 
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Just dreaming about a drop & swap big power boost. The bike head's biggest advantage is the downdraft ports, vs the car head's sharp angle.

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PostPosted: Sat Jan 24, 2009 1:55 am 
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crazyman wrote:
Just dreaming about a drop & swap big power boost. .


It's called a turbo charger 8)


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PostPosted: Sat Mar 28, 2009 2:52 am 
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What about an F10a engine? They were a Samurai engine, 1000cc four. How bout the bore spacing on that?

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PostPosted: Sun Mar 29, 2009 7:24 pm 
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why bother with a 80hp turbo engine when you can get 200hp out of an NA gsxr engine?

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